what is the difference between (a) “andersons charx” with humic acid/biochar and … (b) “andersons humichar” also with same humic acid/biochar ?

Nothing one is e-commerce/consumer sku humichar the the other one is the Pro sku

how many square feet does this bag cover?

10,000 to 40,000 sq ft. from High to Low rate.

What is the percentage of carbon and humic acid?

You're kidding right? In the product description it says: About this item HumiChar is an organic, carbon-based soil amendment containing 50% high-quality humic acid and 50% granulated biochar -- Provides the benefit of quickly-available humic acid and the long-term soil building qualities of the biochar that lasts for decades

What is the shelf life for this product? I have a smaller lawn so might use this for 2-3 years. Will it stay good?

Doc's says it will last, unused, for years. I also have a small lawn, only 3200 sqft. I break it down into two applications about 6 to 8 weeks apart. Don't forget the recommended application of chicken feed.

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The Andersons HumiChar Organic Soil Amendment with Humic Acid and Biochar Covers 12,000 sq ft (12 lb)

Product ID: 415024718

Details

Brand
The Andersons
Item weight
5.44 kg
Style
nutrient-rich
UPC
031865325212
Unit count
5678.11

🌱50% Humic Acid for rapid nutrient uptake

🪵50% Granulated Biochar for decades-long soil health

⚙️Patented DG Technology for fast, efficient breakdown

¥43491

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Transform your soil, transform your lawn — the secret pros don’t want you to know!

COVERS 12 000 SQ FT - Generous 12 lb bag treats large areas, perfect for ambitious green spaces
PATENTED DG TECHNOLOGY - Ensures ultra-efficient nutrient delivery with low dust, easy application
VERSATILE USER FRIENDLY - Blend with fertilizers or use solo to customize your lawn care routine
DUAL ACTION SOIL POWERHOUSE - Combines quick-acting humic acid with long-lasting biochar for sustained soil vitality
ECO FRIENDLY OMRI CERTIFIED - Supports organic gardening with a sustainable, non-toxic formula

The Andersons HumiChar is a premium organic soil amendment blending 50% humic acid and 50% granulated biochar, enhanced with patented Dispersible Granule (DG) technology for rapid nutrient release and long-term soil improvement. Covering up to 12,000 sq ft, it’s OMRI listed and designed to boost soil, lawn, and plant health while reducing fertilizer dependency.

Specifications

ASIN	B08ZBGQNJ7
Best Sellers Rank	#322,390 in Home ( See Top 100 in Home ) #145 in السماد العضوي في الهواء الطلق
Brand	The Andersons
Brand Name	The Andersons
Customer Reviews	4.7 out of 5 stars 1,171 Reviews
Item Weight	5.44 kg
Item weight	5.44 kg
Manufacturer	The Andersons
Manufacturer Part Number	1
Model Number	12
Style	nutrient-rich, moisture-retaining
Style Name	nutrient-rich, moisture-retaining
UPC	031865325212
Unit Count	5678.11 Milliliters
Unit count	5678.11 Milliliters
Volume	12 Liters

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